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Card 404 of 9762026-09-14 issue

Observed arrival · 2026-09-14

The Road to JC₂

jc2.fun Observed source
Editorial interest 84/100 Selection signal · not a rating of the site

An open, collaborative campaign to investigate and potentially settle the plane case of the Jacobian Conjecture.

Landing page captured for the 2026-09-14 issue.

Field notes

The campaign divides the problem into named lines of attack rather than presenting one undifferentiated proof claim. Its status labels include proved, partial, provisional, open, and not a ceiling; one mechanism is identified as machine-checked in Lean. The displayed workflow asks contributors to fork a repository, appoint a coordinator for subagents and shell commands, and submit results through pull requests or issues. The page reports a reduction from 24,063 to 90 necessary configurations in one screening process.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade

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Pull Over for the Index

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jc2.fun

Landing page observed 2026-09-14. The live site may have changed.